/*
 * Copyright 2021 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.cloud.pubsublite.flink.internal.enumerator;

import com.google.cloud.pubsublite.flink.internal.split.SubscriptionPartitionSplit;
import com.google.cloud.pubsublite.flink.proto.SplitEnumeratorCheckpoint;
import java.util.Collection;
import java.util.List;
import java.util.Map;

public interface PartitionAssigner {

  List<SplitEnumeratorCheckpoint.Assignment> checkpoint();

  Map<TaskId, List<SubscriptionPartitionSplit>> assignSplitsForTasks(
      Collection<TaskId> tasks, int currentParallelism);

  void addSplits(Collection<SubscriptionPartitionSplit> splits);

  Collection<SubscriptionPartitionSplit> listSplits();
}
